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Vishay General Semiconductor - Diodes Division 1.5SMC68AHM3_A/H
- Part No.:
- 1.5SMC68AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68AHM3_A/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,196
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Product details
Overview
1.5SMC68AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 58.1 V stand-off voltage (VWM), 92.0 V clamping voltage (VC) at 16.3 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the 1.5SMC68AHM3_A/H datasheet, 1.5SMC68AHM3_A/H pinout, 1.5SMC68AHM3_A/H application, or 1.5SMC68AHM3_A/H equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial designs requiring repeatable surge immunity per ISO 7637-2 and IEC 61000-4-5.
Technical Context
The 1.5SMC68AHM3_A/H operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified VBR range (64.6–71.4 V), then clamping transients to ≤92.0 V at 16.3 A. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Thermally, it delivers 6.5 W steady-state power dissipation on infinite heatsink at TA = 50 °C, with RθJA = 75 °C/W and RθJL = 15 °C/W. The device is rated for TJ = –65 to +150 °C and meets JESD201 Class 2 whisker resistance, supporting long-term reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at IT = 1.0 mA - defines precise avalanche onset window for predictable clamping initiation |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 92.0 V at 16.3 A (10/1000 µs) - actual clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - peak transient energy absorption capacity under standardized surge waveform |
| IFSM | 200 A (8.3 ms half-sine) - surge current handling for unidirectional forward conduction events |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive and industrial enclosures |
| Package | SMC (DO-214AB) - surface-mount package with 8.0 mm × 8.0 mm copper pad thermal footprint per terminal |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, UL 94 V-0 flammability rating, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-609A Class 1 definition; supports environmentally regulated industrial and automotive supply chains |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when mounted per recommended pad layout |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on downstream ICs such as microcontrollers, CAN transceivers, and analog front-ends |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking; compatible with automated SMT assembly lines |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 5 V or 12 V sensor signal lines (e.g., oxygen, pressure, temperature sensors) from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role: Unidirectional TVS placed between sensor output and MCU input to clamp transients before they reach sensitive analog-to-digital converters. Use Value: Limits voltage excursion to ≤92.0 V during 16.3 A surges, preventing latch-up or permanent damage to 3.3 V/5 V interface circuitry. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and electrostatic discharge. IC Role / Device Role: Front-end transient suppressor on 24 V DC input channels, positioned ahead of optocouplers and level-shifting circuitry. Use Value: Absorbs up to 1500 W of transient energy while maintaining VWM = 58.1 V - ensuring normal operation during brownouts and noise spikes. |
| DC Power Rail Surge Suppression | Telecom Interface Protection |
|
Use Scenario: Secondary surge protection on 48 V telecom power distribution boards and PoE-powered equipment. IC Role / Device Role: Parallel-connected unidirectional TVS across DC bus to shunt inductive kickback from relay coils and motor drivers. Use Value: Clamps 10/1000 µs surges to 92.0 V within nanoseconds, limiting stress on downstream DC-DC converters and FETs. |
Use Scenario: Protecting RS-485 transceiver data lines in base station backhaul links exposed to lightning-induced ground potential differences. IC Role / Device Role: Line-side TVS on differential pair, used with common-mode chokes to meet IEC 61000-4-5 surge immunity requirements. Use Value: Provides <1 ns response and low VC/VBR ratio to preserve signal integrity while meeting Telcordia GR-1089-CORE Level 3 surge compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/52 | Lower PPPM (600 W), smaller SMB package (DO-214AA), VC = 103 V @ 5.8 A | Rated for lower-energy transients; suitable for consumer electronics but not automotive load dump | Select when space-constrained layouts require smaller footprint and surge requirements are ≤600 W |
| 1.5KE68A | Through-hole DO-201 package, same VBR/VC specs, but no AEC-Q101 qualification or halogen-free status | Limited to non-automotive industrial use due to lack of automotive qualification and higher moisture sensitivity | Choose only for legacy through-hole designs where rework to SMD is impractical and AEC-Q101 is not mandated |
Compared with SMBJ64A-E3/52 and 1.5KE68A, the 1.5SMC68AHM3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge rating, halogen-free construction, and SMC package thermal performance - making it the only option qualified for new automotive and high-reliability industrial designs requiring full IEC 61000-4-5 and ISO 7637-2 compliance.
Availability
1.5SMC68AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and DC power rail surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5SMC68AHM3_A/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 qualification, and robust thermal design in the SMC package.
FAQ
What is the clamping voltage of the 1.5SMC68AHM3_A/H under a 10/1000 µs surge?
The 1.5SMC68AHM3_A/H has a maximum clamping voltage (VC) of 92.0 V at 16.3 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and represents the highest voltage imposed on the protected circuit during a defined transient event.
Is the 1.5SMC68AHM3_A/H qualified for automotive applications?
Yes, the 1.5SMC68AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and revision notes specifying AEC-Q101 availability for _A-suffix parts in the 1.5SMC6.8A to 1.5SMC220A range. It undergoes stress testing per the AEC-Q101 standard for transient voltage suppressors, including temperature cycling, HTRB, and surge endurance.
What does the "HM3" suffix indicate in 1.5SMC68AHM3_A/H?
The "HM3" suffix in 1.5SMC68AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering information, HM3 parts meet JESD201 Class 2 whisker resistance, UL 94 V-0 flammability, and are supplied in 7-inch tape-and-reel (H) packaging - distinguishing them from commercial-grade M3 or HE3 variants.
How does the 1.5SMC68AHM3_A/H differ from the 1.5SMC68A-E3/57T?
The 1.5SMC68AHM3_A/H differs from 1.5SMC68A-E3/57T in three key ways: it is halogen-free (vs. standard RoHS), AEC-Q101 qualified (vs. commercial grade), and supplied in 7-inch tape-and-reel with "H" carrier (vs. "57T"). Electrically and thermally, both share identical VBR, VWM, VC, and PPPM specifications, but only the HM3 version meets automotive reliability requirements.
What is the maximum operating junction temperature for the 1.5SMC68AHM3_A/H?
The 1.5SMC68AHM3_A/H has a maximum operating junction temperature (TJ) of +150 °C, as specified in the Absolute Maximum Ratings table. This enables reliable operation in under-hood automotive environments and high-temperature industrial enclosures, provided PCB thermal design maintains junction-to-ambient thermal resistance within limits (RθJA = 75 °C/W typical).
1.5SMC68AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC68AHM3_A/H FAQ
1.How can I place an order for 1.5SMC68AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68AHM3_A/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5SMC68AHM3_A/H reliable?
The price and inventory of 1.5SMC68AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC68AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68AHM3_A/H?
1.5SMC68AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68AHM3_A/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5SMC68AHM3_A/H?
For technical support, including 1.5SMC68AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC68AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68AHM3_A/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5SMC68AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC68AHM3_A/H?
All 1.5SMC68AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68AHM3_A/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5SMC68AHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC68AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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